Barn at Twyn-gwyn Farm is a Grade II listed building in the Torfaen local planning authority area, Wales. First listed on 29 May 1997. Barn.

Barn at Twyn-gwyn Farm

WRENN ID
waning-newel-ivy
Grade
II
Local Planning Authority
Torfaen
Constituency
Torfaen MP: Nick Thomas-Symonds (Lab)
Country
Wales
Date first listed
29 May 1997
Type
Barn
Address
Barn at Twyn-gwyn Farm, Pontypool Park, Pontypool, Trevethin
OS grid reference
SO 292 015
Coordinates
51.70836, -3.02468
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The barn at Twyn-gwyn Farm is a whitewashed rubble stone structure dating from the 18th century. It features a stone slate roof on the east slope and corrugated metal on the west slope. The barn has a central entrance with a small projecting roof and includes a modern extension. To the right of the entrance, there is a small lean-to cowshed with a Welsh slate roof. At the north end, there is a hay loft with a taking-in door at the gable and a secondary door below. The roof is steeply pitched. The west front, which faces the stock-yard, has undergone more alterations. Although the interior was not inspected, the steep roof slope and the original covering on one slope suggest that the original roof structure is still intact.

Local climate

Barn at Twyn-gwyn Farm receives an average of 940 mm of rain a year. This makes it wetter than 73% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 72% of listed buildings.

It experiences an average of 41 freeze-thaw cycles a year, more than 79% of listed buildings. Of these, 19 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

More on this building

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  • Detailed attributes — period, style, materials, features
  • Flood risk assessment
  • Radon risk assessment
  • Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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